Electrolytic cell.



J. B.jBURDETT ELBGTROLYTIG CELL. APPLICATION PILBDNOV. 6, 1`912.

at its'upper edge Within the 'spiral chamber 'of the top or cover andthe othersimilarly formed into a spiral and having its upper edgesextending into the space between the spiral .convolutionsof the Walls ofthe vchainber. .I also propose to separate' the `spiral electrode plateswith a porous Acurtain or ldiaphragm also' formed into a spiralandsupported' upon the walls of thespiral chamber, the electrode platesbeing suitably suspended withinv the spiral relation -indicated. `I-also employ 'a gas. delivery connection leading from theclosed'chamberfor the delivery o'f the evolved gas collected in saidchamber, and another delivery connectioncommunicating with the spaceoutside 4of said chamber for the delivery therefrom ofthe gas collectedtherein from the other electrode plate.` f

In the accompanying drawing referencenu'meral llldesignates a receptacleadapted to contain the4 caustic solution Aor other liquid to bedecomposed and which, inthe present instance, is of'cylindricajlcontourclosed at the bottom and open at. the top.

.The open top of the receptacleis closed A'by a .cap or cover 1 1.Carried by, or, and preferably, formed integrally -With the cap .orcover11` upon theunder sidev thereof isa 4spirally arranged chamber 12, thatis, the

Walls 13 of the'chamber. 12.are fornied into a s inal, thereby makingthe.chamber 12 l Wit in .said spiral walls a closed chamber their lower.edges areimmersedin the solu-v pending therefrom intothe` receptacle 10,as

` While 'the s ace.14. outside .-of the inclosure 1lb is open. Thespiralv Walls 13 of said wal .of the closed 'chamber 12 depend ydoivn-Wardly fromv the top or cover 11 and at tion to be decomposed. Suitablysuspended lvvithin the'closed chamber. 12 is' an electrode plate 15',which is formed into a spiral to conform to the spiral'contour-'of saidchamber, the upper'edge of said plate extending through the open mouthof 'said chamber and'into said chamber, thesaidplate de- -clearlyshown.- Similarly, an electrode plate 16,- similarly. formed into aspiral is a'r rangedwith its Kupper edge to extend into the open space414 which surrounds the spiral Wall of the closed chamber 12, said plate16 depending therefrom into the re' ceptacle 1 0, 'as shown. Theelect-rode platesv 1.5, 16 may. be supported in ,the relation' above.described -in `any suitable or convenient': manner. I have shown alsimple arrangementwherein supporting rods 17, 18 extend through the top.11 and are electrically connected and preferably Welded to the upperedges. ofthe plates 15. 16 respectively. Theserods 17, 18 not only serveto support the electrode plates 15, 16 but they also constitute circuitterminals forconnec-v tion to a convenient .'source of current.

In order to etiicientlyseparate the gas 'claim as new an evolved from oradjacent one electrndenplate' orgth' surface thereof from that'evolvedthereto. .A convenient arrangement for supporting the porous curtain isto Supl port the same at its upper edge by applying it atwiseagainst oneof the walls of the closed chamber 12. In Fig. 5 I have shown a siszplearrangement for supporting the porous curtain 19 by applying thereto aring 2O arranged in encempassing-relation with respect to and inposition to hue' the 'from .or adjacent the surface of the other of 'f-said plates, I employ a suitable ,porous diaphragm or curtain indicatedat 19 andapply the same in interposed relation with respect to theelect-rode plates and in spiral relation' exterior surface of the Wall13 ofthe (ilosed 'chamber -and suitably secured to said Wall,

for instance, by means of a clamping asl 'bahd 21, the upper edge ofthe4 curtain being clamped betweentlie vrii1g'20 and the wall 13.

- In order to prevent the formation of a shoulder at the lower edge ormouth of the chamber 12 which .might interfere with the passage of thegas into said` chamber, I p refer to .providetlie lower edge of thering/20 with an off-set portion indicateds'at 22 to' engage over the.lower edge' of the wall 13,v

thereby .bringing thel curtain 19, or the surface thereof toward.parallel relation with the inner surface'of the Wall' 13 and. hencepreventing an otherwise objectionable shoul-.

der at the loi'ver` edge of the wall 13.

A delivery pipe. connection 23 delivers from the' closed chamber 12, and'similarly .1 a deliverey pipe connection 2ftdelivers from the openspace 14. *These delivery. connections mayl include the usual lanterns25 through which the separated gases passing therethrough may bedelivered intoconventhence into service pipes in the.' ordinary manner.r .I

From Ythe foregoing description it .will be seen that I provideaconstruction of electro- .ient gasometers orreceiving tanks and.

lytic cell which is exceedingly simple and wherein the tank orreceptacle containing theelectrolyte-isclosed against the access'ofdirt, clustA or other foreign matter, ivherein izs y face said cover 'ortopfhavr @over ortop :therefor .walls upon its 4under arranged .surf to,forin alclpsedchamb'er, electrode'v porous -curtain separating" said-platesand' ,gas delivery. connections' communicating respectively withlsaid chamber 'and said! ex/ terior}-space., y 2. In .an electrolyticcell,g a receptacle, -a top ',or- A cover .therefor having integralpirallyarranged `Walls on the under ,surf thereof-forming a closedchamber and an open space between the spiral convolutiofnsfof -sa-idchamber, electrode plates respectively suspended in said'- chamberv andopen space and having spiral formations to conform :to the spiraloutline of said cham# --t'vel $25.14.. Y

bei' and space respectively, a-porous curtainA interposed'between saidelectrodev plates and' gas delivery connections communicating with saidchamber and exterior space respec- `3. an electroljtic'- cel1, areceptacle, a

' top or .,cover therefor having depending from theunder surface thereofa'secially arranged wall ,forming a closed' amber open vat the" bottomand. an fopen l space exf terior of-said chamber, electrode'platessuspended respectively in saidgchamber and open space, a porous. curtainappliedagainstA the' spiral vvallof said. chamber .and depend- -ingtherefrom in spiral formation and interposed between said electrode`'plates and a clamping' ring fornsecurn-g 'said curtain against-.saidspiral Wall, said ring having an` off-set'ilower edge to engage o ve'rthe' lower edge of said wall to bring the surface of the 'curtain towardalinement with the inner surface of said wall, and gas'deliveryconnections -respectively fromsaid` chamber and open space. l

In testimony .whereof I have hereunto set my hand in the presence ofthesubscribing witnesses, on this first' day of November A. 1).-, 1912.

' p -JOHN-B. BURDETT. Witnesses: I*

E. H; THOMAS, M. SHIELDS.

